Fan Gasket 120mm to 140mm

thingiverse

This gasket is designed to fit snugly around a 120mm fan when it's installed in an area that has both 120mm and 140mm mounting options available. Its main function is to cover up any exposed mesh from the smaller fan. It can be used on any case with fan holes that offer both 120mm and 140mm mounting points. The creator of this gasket uses it specifically for the side-panel fan in their Fractal Design Define R3 enclosure.